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Investigations into sensing characteristics of circular thin-plate electrostatic sensors for gas path monitoring 被引量：1

Investigations into sensing characteristics of circular thin-plate electrostatic sensors for gas path monitoring
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摘要 Circular thin-plate electrostatic sensors are promising in gas path monitoring due to their advantages of non-intrusiveness and easy installation. The spatial sensitivity and filtering effect are two important performance parameters. In this paper, an analytically mathematical model of induced charge on a circular thin-plate electrode is first derived. Then the spatial sensitivity and filtering effect of the circular electrostatic sensor are investigated by numerical calculations. Finally,experimental studies are performed to testify the theoretical results. Both theoretical and experimental results demonstrate that circular thin-plate electrostatic sensors act as a low-pass filter in the spatial frequency domain, and both the spatial filtering effect and the temporal frequency response characteristics depend strongly on the spatial position and velocity of the charged particle. These conclusions can provide guidelines for the optimal design of circular thin-plate electrostatic sensors. Circular thin-plate electrostatic sensors are promising in gas path monitoring due to their advantages of non-intrusiveness and easy installation. The spatial sensitivity and filtering effect are two important performance parameters. In this paper, an analytically mathematical model of induced charge on a circular thin-plate electrode is first derived. Then the spatial sensitivity and filtering effect of the circular electrostatic sensor are investigated by numerical calculations. Finally,experimental studies are performed to testify the theoretical results. Both theoretical and experimental results demonstrate that circular thin-plate electrostatic sensors act as a low-pass filter in the spatial frequency domain, and both the spatial filtering effect and the temporal frequency response characteristics depend strongly on the spatial position and velocity of the charged particle. These conclusions can provide guidelines for the optimal design of circular thin-plate electrostatic sensors.
作者 Zhongsheng Chen Xin Tang Zheng Hu Yongmin Yang
机构地区 Science and Technology on Integrated Logistic Support Laboratory
出处 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2014年第4期812-820,共9页 中国航空学报（英文版）
基金 supported by the National Natural Science Foundation of China(Nos.51275520,50805142)
关键词 Circular thin-plate Electrostatic sensor Gas path monitoring Induced charge Spatial filtering effect Spatial sensitivity Circular thin-plate Electrostatic sensor Gas path monitoring Induced charge Spatial filtering effect Spatial sensitivity
分类号 TP212 [自动化与计算机技术—检测技术与自动化装置]
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Chinese Journal of Aeronautics
2014年 第4期

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